Research And Design On Control System Of Open Numerical Control Milling Machine

This paper derives from a practical application subject which is studying about three-coordinate numerical control mill machine carried by the Industrial Training Center of Hefei University of Technology. Considering the really situation, we employs "embed industrial PC + motion controller" as the machine's numerical control system. The system contains embed PC and Four Axes Motion Controller. The former type is PC104-1624CLDN supplied by EVOC of Shenzhen., and the latter type is ADT-8644 supplied by Taida Company.At first, the paper simply introduces the development history, trend and concept of open CNC system, and makes the analysis about the feasibility of the system's studying scheme,studying contents and key problems. Second this paper describes the system's structure and related theory, introduces the improved circular interpolation arithmetic. After that this paper gives an account of the function theory and characters of hardware which consist the system, and designs the main electrical connection in detail of system. The following is about the CNC system software and NC simulation. In this part, we do most efforts to compile and interpret NC code, to do some research on the realization of tool compensation, and to describe the design of simulation interface in detail which is about NC simulation of tool path. Then the paper introduces the control theory and how to build structure which based on SVPWM. Next step the paper gives detailed method about how to adjust the system and how to choose parameters. At last the paper summarizes main work for this subject,achievements, and puts forward prospect about this subject.This paper derives from a practical application subject, so, to some degree, there is a certain of theory meaning and reference value in this paper, especially for those staff who are engaged in studying and developing numerical control system and device.